Valve spring compressor and replacer



.Oct. 13, 1931. J. E. WAINWRIGHT 1,326,908 I VALVE SPRING COMPRESSOR AIJD REPLACER 2 Sheets-Sheet 1 Filed Feb. 1.6, 1929 x .5 m. M

I Oct. 13,1931. wA|NwR|GHT 1,826,908

VALVE SPRING COMPRESSOR AND REPLACER Filed Feb. 16, 1929 2 Sheets-Sheet2 INVEN TOR. JOSEPH sm/nnw/a/rr ATTORNEYS.

Lee

lien

Patented Oct. 13, .1931

eosnrn E WAINWRIGHT, 10F BBOOKLYNQN 03k 'vALv'E" SPRING do urimssoe emjee mceej l Application;filedjebruaryiw, 1929.v I Seriel 340,4} 37;f

This invention. relates tof-velve tools ofthe type employed torcolnp'ressingjenclfllift ng valve springs of internal combustion enginesproved tool;

incident to making repairs thereto.

5 One of the primary Obje ci e-P invention fisv to provide 2; simple andrugged valve spring tool-Which 'vvill efiectively and positivelyaceomplish the deslred result end with the expenditure of e'minimumenount:

10, of tinieland effort.

" .Anothersail'ie nti Y Y the IPI V 50f: p ll et heed carrying thecompressing" rack bar and operating crank therefor, -the iheadbeingrotatable on the 15 frame otftl-ie toolgfvvherebyi the crank can bedisposed in a eonvenient pos1t1on foropere tion and outof the Way ofjoints ofthe engine and whereby the crank can beplaeed on'o'ne side ofthe frame or the other for the eon- 80 venience o fle'ft or righthendvvvorl rmen I v i A further object of the invention 1s the.

provision of ,a novel friction I loCkcfarried directly by the pinion'shefh for positively locking the pinion Jandeon'sequent'ly the rack l 25bar in an adjilst e'd-rpo-sit'ion the'lock beingo'f nient to be had.

silch e'ichar'e'eter as p'eriiiit e fine adjust- A further object'of theinvention is the provision of a novel spring pressed centering pincarried bythe reek 'for engagingfthe re-' cess in the valve head topermit elinement of the tool "with the longitudinal-axis of the valve,when the tool is used on the valve for conip'ressingthespring end'forcenterifng and holding the springwhen the spring isloein'grecompressejd foressoei'ation with thevelve stern. The foot ot the framereeeives e novel dome oflcjon-icelshape for properly holding the lowerendof the springdu'ring the eo'n'1"-' pressionthereoif. i 1 f 1 v i Astill'further 'objeetfof theinvention is to provide an improved "tool ofthe ebove'oha ester, Which Will befdurable-end 'eflici'ent in use,"nethatwill beeasy to memifectureend one "which can be placed upon themarket at e reesonablecostp' With these" and; other objects "View, the

invention consists in the novel eonst'ruetion, arrangement endformetonof pe'rts,e's"wv1'll hefhe' matter-[more spec ficallydescr bed;

bj eet invention is 7 direction of the arrows";

in section with the crank, the view illustrat claimed, end illustratedin the accompanying d'rewiiigs in'Whiehfdrevvings: Fi ure 1 is' a'perspeetivefview of my im Figure 2 is showing the tool house on inengine fore'oinlpressing aj valve" spring thereon tofeeilitete' theremoval of the holding pin .on the valve;

Figure "3 is ade'teilvertieel seht'itiiu showing- 1 the toollin use forrecompressing esprit-1g; i1-

r t gflie dome associated-with the-foot of the frame for eenterin g'thespring and for;

receiving the lower hooked-endso-f the spring holding'clip; Fig1ire 4 isa det ail'verticel section taken on the line of Eigfi relooking in thedi -Y rection of theerrows; ff;

- Figure 5 is enenhi ged fragmentary side elevation ofthe flipper end ofthe ifraniej'showzgti) i i ing the novelturret heed end'jaek loeJr,- pa"t being shown broken may and in section;

Fliguree is a frag-men .Ofthe improved device; 1;;

I Figure {Lisa detail "ve'irt'icel"seetion telken onj the' line 7 -7 ofFigure 5 looking in thes Figure 8 is a side elevationof the he mesh'oWingfthe inner face thereof;

Figure 91 a detail side elevation e the pinion shovving the countersunkface thereof} Figure 10 is edeteil side'elevetio'n of the operatingshaft with the opereting "erank I at! tachjed thereto, pertof thes'heftbeing shown ing the-novel eonstruction ofthe' shaft for: V i receivingthe pinion and the'jam nut, the

lines;

' Figure 11 is zi' fregrnenterjside el'ev'ition 90" of one endofthefopereting': eh ft illustretmg a sli htly odified Ineen's" rho1di1ig V the" jam in position, the Washer means being shown;ini'fsection v V or Figure 1-2 is Ca detail *vertieel Qseetion throughthe'l'owver endof the reek berend l'ookingj 'in'the 'direetion'offtl VFigure 131's arfraginentery-"side elevation arrows;

f h we y vi e f bt m diiqfm Fe? of turret head with modified means forlocking the head in an adjusted position on the frame;

Figure 14 is a fragmentary plan View showing the foot carried by thelower end of the frame, parts of the foot being shown broken away and insection and illustrating the means which can be employed for adjustingthe resilient arms of the foot toward and away from one another; V

Figure 15 is a detail horizontal section taken on the line 15--'l5 ofFigure 14 looking in the direction of the arrows illustrating the meansfor anchoring the adjusting bolt for the resilient arms of the foot inposition.

Referring to the drawings in detail, wherein similar referencecharacters designate corresponding parts throughout the several views.the letter A generally indicates my improved tool which comprises aframe 15 of substantially C shape. This frame is preferably formed froma single piece of steel and includes the upper and lower legs 16 and 17and a connecting vertically disposed body portion 18. i j

The upper leg 16 supports my novel turret head'19 which forms one of thesalient features of my invention. This turret head forms a casing forthe operating parts of mV tool and this head slidablv receives the rackbar 20, which extends vertically therethrough at the longitudinal axisthereof. The turret head 19 adjacent to its upper end and at one side ofthe rack bar 20 rotatably carries the operating shaft 21 which is alsoof novel construction. As shown. the shaft 21 includes a spaced bearingportion 22. of a relatively large diameter. and a bearing portion 23 ofrelatively small diameter. and these'bearing portions are receivedwithin suitable'bearing openings in the turret head or casing. Theportion of the shaft between the bearing portions 22 and 23 is providedwith right hand threads 24 and the operating pinion 25 is threadedthereon in contact with the shoulder 26 on said shaft defined by theportion 22. A stud 27 is formed axially on the bean ing portion 22 andreceives the operating crank 27 which crank can be held in place throughthe medium of a nut 28 threaded on said stud. The end of the shaftopposite the stud 27 also protrudes beyond the turret head or casing andhas formed thereon relatively coarse left hand threads 29 for thereception of the jam nut 30 which forms a part of my novel lock forholding the rack bar 20 in its readjusted position. The jam nut isprovided with an operating handle or crank 31 and the inner face thereofis provided with a cam surface for binding engagement with one face ofthe frame or turret head. At this time attention is directed to the factthat the inner and outer faces of the casing or turret head onopposltesides of one bearing opening are provided with annular frictionribs 32 and that the jam nut has its inner face concaved as at 33 forfrictional contact with the said annular rib adjacent thereto. Likewiseone face of the pinion is also dished or concaved as at 34 for engagingthe adjacent annular friction rib 32 when the jam nut is tightened up onsaid shaft. By this construction it can be seen that when the jam nut istightened that the shaft will be drawn laterally'bringing the nut towardthe turret head or casing and the pinion in intimate contact with itsadjacent friction rib 32, and that the pinion and the jam nut willfrictionally contact with said friction ribs 32 and thereby preventmovement of the shaft and consequently locking the rack bar in anadjusted position. It can be seen by this form of lock that the rack barcan be adjusted very finely and at any point on said head. The jam nut30 can be held on the shaft against accidental displacement therefrom inany desired way, and I can employ a set screw 35 and a washer '36 forthis purpose as shown in Figure 10 fof'the drawings, or I can reduce theend of the shaft to provide a smooth extension 37 for the reception of awasher 38 which can be held in place by a cross pin 39. This is shown inFigure 11 of the drawings. A cross pin 40 can be carried by the upperend of the rack bar 20 in order to limit the downward sliding movementthereof.

Attention is again invited to my turret head 19 and it isto be notedthat the same gradually decreases in size toward its lower end andterminates in an axially disposed cylindrical bearing shank portion 41which isrotat-ably mounted within the collar 42 carried by the upper arm16. formed on 'or secured to the arm in any de sired way and in thepresent instance the collar is provided with a yoke 43, the arms ofwhich receive the upper arm or leg 16 of the frame 15 and is securedthereto by suitable bolts or other suitable fastening elements 44.Directly above the bearing shank portion 41 the turret head is providedwith an annular shoulder 45 which bears against the upper face of thecollar 42. The portion of the bearing shank portion 41 which protrudesbelow the collar is provided with external threads for the reception'ofa holding nut or threaded ring 46 which can be held against accidentaldisplacement by the use of a set screw 47. By this arrangement, it canbe seen that the turret head or casing 19 is freely revoluble on the armand in order to hold the turret head in an adjusted position on theframe a set screw 48 is carried by thecollar which can impinge againstthe wall of an annular guide groove 49 formed in'thebearing shank 41..To lessen the weight of the turret head and tofacilitate the sliding-ofthe rack bar 20 therethrough I prefer to have the inner face thereofonly contacting with This collar can be v the rack bar at oppositediagonal points and the other portions of the turret head canhollowedout'if desired.

The lower end of the rack bar QO carries a novel head 50, which alsoforms one of the important features of my invent-ion. f This' head 50 isoflasubstantially disc shape'with f the lower face thereof preferably"concaved.

as at 51 and this head caube formed on or m secured to the rack bar inanv desired; wayg 'In-the presentinstance I have shown the head 50providedwith upstanding spaced arms 52 between which th'e'lower endofthe' rack bar 83 is received and suitable fastening elements 7 such asa screw. 53 canlbe employed for securing thelyoke tothe rack bar;Thefjextrem'e lower end of the rack bar. is slotted as-atfiet to )rovidea casin for the rece ti'on ofan,

BXPEUlSlOIl coil spring 55 which bears against at itsupper end. This,spring 55 normally, functions to project the centering pin 57 beyond thelower concave d face 51 of the head and I lay particular stress on the.for-

mation of this head and pin'an of will be clearly set forth. l M 4 ,Thelower leg 17 of the trame carries a foot60. whichmay include a pair ofresilient.

inner. endsfas at 62, to said -leg l7; -The resilient arms 61 adjacenttotheouter ends thereof are bowed in oppositedirections as 5 M1 63 and theloweredges of the bowed por- 1" U tions are provided withinwardlydirected V arcuate flanges 64. The extreme outer endsof 1 theresilient arms beyond the bowed portions can be flared outwardly. atoppositediree tions as at 65. The axial center ofthefoot 60*hetweenthebowed portions-63 of the. arms is located in directaxial alinement withthe centeringpin 57 and theentire' construction ofthe tool is'such thatthese parts will be held .in proper axial alinement at all times,

. In userof myimproved tool; when itis dewasher therefor,.;after whichthe crank'is rO- tatedfin the desired .directi'on forzhr'inging the head50 and the foot toward-'on'eanother. 7 This will ,compressthesprin'garound the valve stein and lift thesame ofl' ofthe, holding pin whichcan now'be conveniently G3 removedQ Referring ,to Figure :2 'of the'drawings, the use of the tool cant be readily seenand a fragment'oi'f'the englnej blo ck is indicatedby the reference eharacter while; rT the valve" and valvestem are indicated by the reference numerals'66and '67. The spring is that the'cran'k can be disposed out of the way ofparts of the engine t'o permit. the free v ai collar 56,- at its lowerend, formed'on the centering pin.57, and against the rack bar.

' dome 7 0 is disposedbetwee'n the resilient arms d the usethere arms 61bolted or otherwise secured atgtheir so" as-t'o-jhold the spring inits'compressed condition.- The holder in the present instance to' holdiand 'ce'nterfthe spring during' the .tated for bringingthe domeand theheadi51 toward one another, ;which v willhring about the compression ofthe spring. The hooked terminals'ofjthe clip engage'inthe slots @72 andact againsttheinclined walls; 7 3 of said shown at 68 and the cross pincarriedby the. stem' '67 for the spring 68 is shown at-69..

After the spring hasbeen compressed to :the. desired tension and liftedfrom off of the" pin-69, the crank 31 of theja-m nut is turned 76 soas'to bring thenut andthe pinion in fries tional leontact with thefriction faces -32 of the turret head," which will lockthe rack baragainst further movement and'thereby permit the -operator to use bothhands for remov- I ing the pin 69 or any otherwork that is to be" done'.

By my arrangement of turret'head 19, the same can befreely t'urned on"the frame, so:

manipulation thereof and the turret'head also forms meanswhereby-the'crank can be I disposed on eitherside of the frame forrightjorleft hand workmen. g

r My tool is also adapted for use in spring re-I: placements and can beused. asfan efli'cient means for recompressing valve "springe Whenthetool is used-for thispurpose the Glof the foot 60 in the bowedportions63 thereof and thisdomeis of conical shape and includes a shank '71which engages between said arms 61. The'conical face of the dome atopposite diametr-ical points is 7 provided i'with' slots-72 and theinner walls of'these slots-are flared as at 7, 3 for a purpose whichwillbelater described. VV-hen-a spring is to be compressed, a clipholder 74 is employed, A 1'00 includes side resilient strips 75 havingtheir terminals at one end providedfwith hooks 76 for-successivelyengaging the convolutions of the spring during the compressing thereof.

The opposite endsofthe arms can be inturne'd as'at 7 7 and secured tothelegsjof a U-shaped resilient handle 7 8.: The lower; end ojf the springis' placed over theconical dome 70" while the centering pin 57 isplacedin the spring through the clip and this pin 57fu'nc-i tions tohold the spring in placeagainst acci" I dental displacement and theconical'head acts compressing thereof. This effectively elimi= 1315nates bulging ofthe spring and the working .ofthe spring efi'foenter.Afterspring placed in position, the crank can now be Tosletsw-hich helpto hold the clip in proper po- Sitionand'the hooks :tofen'gage thespring j convolutions; *Aftef the spring is com-f pressed,.the rackcanbe fed up an'dthe spring i and v holder removed from; the 001. Thespring 'in its compnessed condition infthefISo then held in its adjustedposition.

lower face of the collar 42-, the upper face of which and the lower faceof the head can be provided with mating teeth or serrations 81. By thisconstruction, by loosening and tightening the nut 80, the head can beturned and I can also provide means for adjusting the resilient arms61of the foot 60 toward and away from one another and. in Figures 14 and15 I have illustrated one means of adjusting said arms.

.This means consists of an adjusting bolt 85 which is extended throughthe arms and the bolt has threaded thereon a winged nut 86. Uponmanipulation of the nut 86 on the bolt the arms can be moved oradjusted. In order ,to prevent turning movement of the bolt duringadjusting ofthe winged nut, the head of the bolt can be provided withlugs 87 which can be received in slots 88 formed in one arm. 7

Other changes may be made without departing from the spirit or the scopeof the appended claims, but:

hat I claim as new is: V 1. A spring compressor and replacer coma risinga frame, a foot carried by the lower end of the frame, ahead rotatablycarried by the upper end of the frame and in axial alinement with saidfoot, a rack bar slidably carried by said head, a pinion rotatablycarried .by the head for actuating the rack bar, and

means for holding the headin an adjusted position on the frame againstaccidental turning movement.

'2. A spring compressor and replacer com- .prising a frame, a foot onthe lower end of the frame, a rack bar slidable toward and away from thefoot and in axial alinement therewith, a head shdably receiving saidrack bar and rotatably supported by the upper end j of the frame,operating means for the rack bar carried by thehead, and means for locking the head in an adjusted position on the frame against accidentalturning movement.

3. A valve spring compressor and replaeer comprising a frame, a footcarried by'the lower end of the frame, a collar carried by the upper endof the frame, a turret head having a longitudinal passage therethrough,a rack bar slidablymounted in said passage in axial alinement with saidfoot, a shank portion on the lower end of the head rotatably mounted insaid collar, said extension defining a shoulderengaging the upper edgeof the collar, a nut on said shank portion for engaging the lower edgeof the collar, and 0p:

erating means for the rack bar carried by said head.

4. A valve spring compressor and replacer comprising a frame, a footcarried by the lower end of the frame, a turret head rotatably carriedby the upper end of the frame in axial alinement with said foot, meansfor locking the turret head in an adjusted position against turningmovement, a rack bar slidably mounted in said head in axial alinementwith said foot, means for raising and lowering the rack bar, and meansfor locking the rack bar in an adjustedposition.

5. A valve spring compressor and replacer comprising a frame includingsubstantially parallel upper and lower legs, a foot carried by the lowerleg, a collar carried by the upper leg in axial alinement with saidfoot, a turret head having a reduced cylindrical shank rotatably mountedin the collar, a nut ring threaded on the lower end of the shank forengaging the collar, the shank having an annular groove therein, a setscrew carried by the collar for impinging against the walls of saidgroove, a rack bar slidably supported by the head arranged in axialalinement with the foot, and a pinion carried by the head for operatingsaid rack bar.

6.. In a valve tool compressor and replacer, a head having a passagetherethrough, and tearing openings at one side of said passage, a rackbar slidably mounted in said passage, a transverse shafthavingbearing'portions rotatably mounted in said bearing openings, acrank for actuating the shaft, apinion confined on said shaft betweensaid bearing portions meshing with the rack bar, and a lock for saidshaft for holding the rack bar in an adjusted position including a jamnut threaded on said shaft for engaging the head and for bringing thepinion into frictional lockinwengagement with said head.

A spring compressor and replacer comprising a frame, a foot carried bythe lower end of the frame, a head carried by the upper end of the framein direct axial alinement with said foot, the head having a passagewaytherethrough and bearing openings at one side of said passageway, atransverse shaft having bearing portions formed thereon rotatablymounted in said bearing openings a crank for operating the shaft apinion secured to said shaft between said bearing portions, the headhaving the inner and outer faces thereof at one bearing opening beingprovided with friction ribs, the inner face of the pinion being concavedfor engagement for one rib, a jam nut threaded on said shaft having aninner concave face for engaging the frictionrib, on the other face ofsaid head, and means for turning the jam nut on the shaft in intimateengagement with said head, as and for the purpose specified.

8. In a. spring compressor and replacer, a head having a longitudinalpassage therethrough and bearing openings on one side of the passage, arack bar slidable in said passage, a shaft having bearing portions ofdifferent diameters rotatably received in said bearing openings, one ofsaid'bearin'gportions defining an annular shoulder, the shaft beingprovided with right hand threads between said bearing portions, a pinionthreaded on said shaft in engagement with the shoulder having the facethereof opposite to the shoulder'concaved, the shaft being provided withan extension beyond one of said bearing portions, a crank connected withthe shaft for rotating the same, said threads being opposite to thefirst mentioned threads on said shaft, the inner and outer faces of thehead around one of said bearing openings being provided with frictionribs, a jam nut threaded on said shaft having its-inner face concaved,and means for turning the am nut in intimate contact with the head formoving the concave faces of the pinion and nut into pressed centeringpin carried by the axial center of said working head. 7

10. In a spring compressor and replacer, a

sliding adjusting member, a head of substantially disc-shape carried bythelower' end of said sliding adjusting member havinga cone cave lowerface, and a spring pressed axially v disposed centering p1n carrledbysaidwork engaging head. i

11. In a spring compressor and replacer, a frame, afoot carried by thelower end of said frame, a headcarried by the upper end of said-frame, asliding member associated with said head, means for raisingand loweringsaid sliding member, a work engaging head carried by the lower end ofsaid sliding member, and an axially disposed spring pressed centeringpin slidable through said head.

12. In a spring replacer and compressor,

a head, a sliding adjusting member, an operating means for said memberdirectly en-fl gaging the same, and a lock for holding the adjustingmember in adjusted position engaging the head and urging the operatingmeans into frictional contact with the head.

In testimony whereof I affix my signature. 7

J O SEPH E. WAINWRIGHT.

